Bss Qos e Gprs b9 Ed1

7/29/2019 Bss Qos e Gprs b9 Ed1

1/114

MOBILE RADIO DIVISION RELEASE B9

Alcatel CIT File Reference Date Edition Page

MCG/MRD/PCS BSS_QoS_(E)GPRS_B9_Ed1.doc 3DF 01905 2911 VAZZA 15/02/06 01 1 / 95

All rights reserved. Passing on and copying of this document, use and communication of its contents not permitted without written authorization.

PROFESSIONAL CUSTOMER SERVICES

BSS - DEFINITION OF QUALITY OF SERVICE INDICATORS

E-GPRS

RELEASE B9

Appraisal and approval authorities

PCS Manager E. Desblancs PCS STO F. Jarreau PCS/2G F. Colin

DD-MM-YY DD-MM-YY DD-MM-YY


2/114





REVISION HISTORY

Date Reference Author Origin Comment

07-09-94 Ed. 1 Creation

30-10-95 Ed. 02 Update R2.0

30-09-96 ED.038BL 006010003

Update R3.0 This version treats new OMC-R Release 3 counters(after review).For A-Interface point of view, new Release 3 featureshave been added

NSS indicators have been removed.

21-04-97 Ed.04 It.01

Draft8BL 00601

0004

Update R3.2 Update of Ed.03 to take into account modifications in

R3.2 counters description +Comments of : JNC

30-05-97 Ed.04 It 028BL 006010004

Update R3.2 Update of edition 01, taking into account comments ofIt.01 and Monitoring of Concentric Cells andMicrocellular specific indicators

31/07/97 Ed.05 It 018BL 006010005

Update R4.0 Update of Edition 4, taking into account modificationsof counters from R3.2 to R4.0 (new counters, newdefinition). In particular, some new indicators relatedto concentric cells have been added, as well as new A-Interface indicators.

15/09/97 Ed.05 It 028BL 00601

0005

Update R4.0 Corrections after review : comments from CG + JNC

31/11/98 Ed.06 It 018BL 006010006

P. Pelouas Update B5 Update of Edition 4, taking into account modificationsof counters from B4 to B5 (new counters, newdefinition) + new features B5 + Reference name

Ed.06 It 02

8BL 006010006

P. Pelouas Update B5 Update of Edition 5, taking into account comments

from B.Viviand, P.Godet and V.Royer.

29/10/99 Ed.07 It 01

8BL 006010007

J-N Lignon Update B6.2 Update of Edition 6 (first draft), taking into account

modifications of GSM counters from B5 to B6.2 (newcounters, new definition) + new features GSM B6, andGPRS counters.

08/12/99 Ed.07 It 028BL 006010007

Released

J-N Lignon Update B6.2It01 GSM counters definition (previously scheduled inSMG 29) and comments from JN. Charneau, P.Pelouas, V. Royer, F. Colin.

1/09/01 Ed.07 It 03

8BL 006010007Released

B Dopazo

S. Rabillard

Update B6.2

It 02

Update of Ed 07, taking into account modifications of

GSM counters.Update of Edition Ed 07 taking into accountmodifications and restrictions of GPRS counters .

12/11/01 Ed.08 It 01

8BL 006010008

B. Dopazo

S Rabillard

Update B7.2 Update of Edition 7 taking into account modifications

of GSM and GPRS counters from B6.2 to B7.2 (newcounters, new definitions) + new GSM and GPRS

features


3/114





03/06/04 3DF 019052811 VAZZAEd.1

N. Marques Update B8 Document split in two for GSM and GPRS parts. Thisdocument refers now only to the GPRS part.This is an update for BSS Edition 8 taking into accountmodifications of GPRS counters from B7.2 to B8 (new

counters, new definitions) + GPRS features and newEGPRS features.

06/12/04 3DF 019052811 VAZZAEd.2

F.Colin Update B8 New edition, taking into account remarks from Jean-Noel Charneau.

15/02/2005 3DF 019052811 VAZZAEd.3

S. Garcia Printing problem resolution

13/02/2006 3DF 01905 2911VAZZAEd 1

N. Bona

P. DuarteN. Marques

Update B9 Update of Edition 3 (3DF 01905 2811 VAZZA Ed.3)

taking into account modifications of E-GPRS countersfrom B8 to B9 (new counters, new definitions) + newE-GPRS features


4/114





CONTENTS

REVISION HISTORY................................................................................................................................. 21 SUBJECT - SCOPE - REFERENCES .................................................................................................. 7

1.1 SUBJECT.........................................................................................................................................................................7 1.2 SCOPE............................................................................................................................................................................. 71.3 APPLICABLE AND REFERENCE DOCUMENTS ......................................................................................................7

2 GENERAL....................................................................................................................................... 82.1 PURPOSE OF QOS INDICATORS................................................................................................................................82.2 TYPES OF QOS INDICATORS ..................................................................................................................................... 82.3 QUICK OVERVIEW OF DIFFERENCES BETWEEN B8 AND B9............................................................................. 9

3

GPRS INDICATORS....................................................................................................................... 13

3.1 INTRODUCTION ......................................................................................................................................................... 133.1.1 OMC-R COUNTERS RETRIEVAL ...................................................................................................13

3.1.1.1 GPRS Counter types .....................................................................................................................................13 3.1.1.2 Measurement Activation at OMC-R.................................................................................................................13

3.1.2 CLASSIFICATION AND NAMING CONVENTIONS ..............................................................................143.1.2.1 Classification ...............................................................................................................................................14 3.1.2.2 Naming conventions .....................................................................................................................................16 3.1.2.3 QOS Description template..............................................................................................................................16

3.2 TRAFFIC LOAD AND TRAFFIC MODEL INDICATORS........................................................................................ 173.2.1 TBF ESTABLISHMENT TRAFFIC ....................................................................................................17

3.2.1.1 Downlink general presentation........................................................................................................................17 3.2.1.2 Downlink TBF establishment request ...............................................................................................................183.2.1.3 Paging sharing .............................................................................................................................................20 3.2.1.4 Downlink global traffic ................................................................................................................................213.2.1.5 Uplink general presentation ............................................................................................................................24 3.2.1.6 Uplink TBF establishment request ...................................................................................................................24 3.2.1.7 Uplink global traffic......................................................................................................................................26

3.2.2 DATA TRANSFER TRAFFIC ..............................................................................................................293.2.2.1 General presentation......................................................................................................................................29 3.2.2.2 TBF Traffic model ........................................................................................................................................30 3.2.2.3 Throughput..................................................................................................................................................34 3.2.2.4 Coding Scheme Usage...................................................................................................................................37

3.2.3 RESOURCE ALLOCATION TRAFFIC ...............................................................................................383.2.3.1 General presentation......................................................................................................................................38 3.2.3.2 Smooth PDCH traffic adaptation .....................................................................................................................40

3.2.4 CONTROL AND TRAFFIC CHANNELS ...............................................................................................413.2.4.1 General presentation......................................................................................................................................41 3.2.4.2 Indicators ....................................................................................................................................................42

3.2.5 GB INTERFACE TRAFFIC .................................................................................................................463.2.5.1 General presentation......................................................................................................................................46 3.2.5.2 Indicators ....................................................................................................................................................46

3.3 GLOBAL QUALITY OF SERVICE INDICATORS....................................................................................................493.3.1 TBF ESTABLISHMENT ....................................................................................................................49

3.3.1.1 General presentation......................................................................................................................................49 3.3.1.2 Indicators ....................................................................................................................................................50 3.3.1.2.1 TBF Establishment Efficiency ........................................................................................................................50 3.3.1.2.2 Congestion ..................................................................................................................................................51

3.3.2 DATA TRANSFER

.............................................................................................................................54

3.3.2.1 General presentation......................................................................................................................................54 3.3.2.2 Indicators ....................................................................................................................................................55


5/114





3.4 RESOURCE AVAILABILITY AND USAGE..............................................................................................................683.4.1 GENERAL OVERVIEW .....................................................................................................................683.4.2 INDICATORS ...................................................................................................................................69

3.4.2.1 Radio: PDCH ..............................................................................................................................................693.4.2.2 Abis Interface..............................................................................................................................................693.4.2.3 Ater Interface..............................................................................................................................................703.4.2.4 Gb Interface ...............................................................................................................................................733.4.2.5 CPU ...........................................................................................................................................................743.4.2.6 DSP............................................................................................................................................................74

APPENDIX A: GLOBAL VIEW OF RNO INDICATORS DIAGRAM FORMS.............................................. 76A - 1 TBF ........................................................................................................................................... 77

A - 1.1 TBF ESTABLISHMENT PROBLEMS...............................................................................................................77A - 1.2 TBF RELEASE AND DROP...............................................................................................................................78A - 1.3 TBF REQUEST AND SUCCESS........................................................................................................................80A - 1.4 TBF RESOURCE REALLOCATION.................................................................................................................81

A - 2 DL TBF ...................................................................................................................................... 82A - 2.1 REQUEST AND SUCCESS................................................................................................................................82A - 2.2 ESTABLISHMENT PROBLEMS .......................................................................................................................83A - 2.3 RELEASE AND DROP.......................................................................................................................................84A - 2.4 DATA TRANSFER ............................................................................................................................................. 85A - 2.5 CODING SCHEME USAGE...............................................................................................................................86A - 2.6 TRANSMISSION PROBLEMS ..........................................................................................................................87A - 2.7 RESOURCE REALLOCATION .........................................................................................................................88A - 2.8 THROUGHPUT...................................................................................................................................................89 A - 2.9 DL GB THROUGHPUT......................................................................................................................................90

A - 3 UL TBF ...................................................................................................................................... 91A - 3.1 REQUEST AND SUCCESS................................................................................................................................91A - 3.2

ESTABLISHMENT PROBLEMS .......................................................................................................................92

A - 3.3 RELEASE AND DROP.......................................................................................................................................93A - 3.4 DATA TRANSFER ............................................................................................................................................. 94A - 3.5 CODING SCHEME USAGE...............................................................................................................................95A - 3.6 TRANSMISSION PROBLEMS ..........................................................................................................................96A - 3.7 RESOURCE REALLOCATION .........................................................................................................................97A - 3.8 THROUGHPUT...................................................................................................................................................98 A - 3.9 UL GB THROUGHPUT......................................................................................................................................99

A - 4 RADIO .................................................................................................................................... 100A - 4.1 PDCH ALLOCATION.......................................................................................................................................100A - 4.2 MPDCH ALLOCATION...................................................................................................................................101A - 4.3 PDTCH AND PACCH.......................................................................................................................................102A - 4.4 PAGING.............................................................................................................................................................103 A - 4.5 CONTROL CHANNELS...................................................................................................................................104A - 4.6 GSM-GPRS........................................................................................................................................................105

A - 5 RESELECTION PROCEDURES ................................................................................................... 106A - 5.1 NACC PROCEDURES...................................................................................................................................... 106A - 5.2 PSI STATUS PROCEDURES ...........................................................................................................................107A - 5.3 RESELECTION PROCEDURE ........................................................................................................................108

A - 6 RESOURCE AVAILABILITY AND USAGE................................................................................... 110A - 6.1 ABIS...................................................................................................................................................................110 A - 6.2 ATER ................................................................................................................................................................. 111A - 6.3 CPU....................................................................................................................................................................112 A - 6.4 DSP .................................................................................................................................................................... 113A - 6.5 GB - BVC...........................................................................................................................................................114


6/114






7/114





1 SUBJECT - SCOPE - REFERENCES

1.1 SUBJECT

This document provides the list of indicators required and advised for BSS Quality of Service monitoring related with theGPRS service and defines each indicator computation rule.

1.2 SCOPE

This document is applicable to the ALCATEL BSS equipped with the BSS B9 software version.

1.3 APPLICABLE AND REFERENCE DOCUMENTS

N Reference Ed. Title

1 3BK 11203 0101 DSZZA 08 B9 MFS Counters Catalogue


8/114





2 GENERAL

2.1 PURPOSE OF QOS INDICATORS

An indicator is a value based on one or more observation counters and that is representative either of system performance(BSS) or subscribers point of view. The counters are either assigned to the system itself or to analysers external to thesystem.

The service quality indicators have five major purposes:

Identify occasional faults on a subsystem (BSS, BTS) and establish corrective action (operating instruction orcorrective maintenance) required to restore service quality;

Detect and identify recurrent system faults to define corrective action and/or palliative action;

Detect and identify radio problem on a cell, to help Radio Tuning teams to analyse radio situation and define correctiveaction (new frequency, antenna modification, parameter adjustment...);

Monitor system changes in terms of:

- load- efficiency- traffic model

- gain obtained by a software update or network modification;

Predict network behavior according to traffic evolution (undersizing, overload, etc.).

2.2 TYPES OF QOS INDICATORS

Two main groups of service quality indicators have been identified to meet the above objectives:

Global BSS network surveillance indicators: These are used to indicate the quality of service provided to subscribers

and identify failures and their causes for the entire network and for each BSS. These counters should be managed at theNSS or BSS level, we will discuss here about BSS level only;

Detailed BSS surveillance indicators: they are used to identify the causes of individual failures for each BSS and each

cell. This can be used to isolate local problems in a subsystem (for corrective maintenance purposes), generic failuresdue to a specific software version, or appreciate subsystem loads.


9/114





2.3 QUICK OVERVIEW OF DIFFERENCES BETWEEN B8 AND B9

This document deals only with the (E)GPRS service. The GSM-related indicators are described in a dedicated document.

The main differences in GPRS/EGPRS service between B8 and B9 are:

New coding schemes and modulation scheme are available in uplink for EDGE transfers (MCS5-MCS9, 8PSK).

Incremental Redundancy in Uplink.New counters due to both previous new B9 features are presented below:P57i : NB_USEFUL_UL_RLC_BLOCK_PDTCH_MCS5 : Number of useful UL RLC blocks received in RLCacknowledged mode on PDTCH encoded in MCS-5.

P57j : NB_USEFUL_UL_RLC_BLOCK_PDTCH_MCS6 : Number of useful UL RLC blocks received in RLCacknowledged mode on PDTCH encoded in MCS-6P57k: NB_USEFUL_UL_RLC_BLOCK_PDTCH_MCS7 : Number of useful UL RLC blocks received in RLCacknowledged mode on PDTCH encoded in MCS-7.P57l : NB_USEFUL_UL_RLC_BLOCK_PDTCH_MCS8 : Number of useful UL RLC blocks received in RLCacknowledged mode on PDTCH encoded in MCS-8.

P57m : NB_USEFUL_UL_RLC_BLOCK_PDTCH_MCS9 : Number of useful UL RLC blocks received in RLCacknowledged mode on PDTCH encoded in MCS-9.

Enhanced Transmission Resource Management, including: Dynamic Abis allocation and M-EGCH StatisticalMultiplexing

P100d : MAX_NB_BUSY_GCH_CELL : Maximum number of busy GCH (16k channel) in the cell.P100e : MIN_NB_BUSY_GCH_CELL : Minimum number of busy GCH (16k channel) in the cellP100f: MAX_NB_GCH_BUSY_GPU : Maximum number of busy GCH (16k channel) in the GPU.P105i : NB_DL_TBF_EST_FAIL_CONG_ABIS : Number of DL TBF establishment failures due to a lack of Abisresources.P105j : NB_UL_TBF_EST_FAIL_CONG_ABIS : Number of UL TBF establishment failures due to a lack of Abis

resources.P105k: NB_DL_TBF_EST_FAIL_TOO_MANY_TBF : Number of DL TBF establishment failures due to a too low

number of GCH to guarantee a minimum throughput for the DL TBF.P105l : NB_UL_TBF_EST_FAIL_TOO_MANY_TBF : Number of UL TBF establishment failures due to a too lownumber of GCH to guarantee a minimum throughput for the UL TBF.P201 : TIME_PTU_CPU_DSP_LOAD : This counter cumulates the time during which at least a DSP is in CPU load state.P202 : TIME_PTU_CPU_DSP_OVERLOAD : This counter cumulates the time during which at least a DSP is in CPU

overload state.P203 : NB_DL_TBF_EST_FAIL_PTU_DSP_LOAD : Number of DL TBF establishment failures due to DSPs that are inCPU load / overload state.P204 : NB_UL_TBF_EST_FAIL_PTU_DSP_LOAD : Number of UL TBF establishment failures due to DSPs that are in

CPU load / overload state.P465 : MAX_NB_USED_EXTRA_BONUS_ABOS_NIBBLES : Maximum number of extra and bonus Abis nibbles

currently used in the cell (by a GCH channel).P466 : CUMULATED_TIME_USED_EXTRA_BONUS_ABIS_NIBBLES : Cumulated time during which extra and bonus

Abis nibbles are used in the cell, cumulated over all extra and bonus Abis nibbles.P469 : MAX_NB_DEFICIT_GCH : Maximum number of GCH in deficit reached in the cell.

P470 : CUMULATED_TIME_DEFICIT_GCH : Cumulative time (in seconds), per cell , during which there is a deficit ofGCH resources (16k channel).

Note : GCH resources cover the established and the reserved GCH.P471 : CUMULATED_TIME_EXCESS_GCH : Cumulative time (in seconds), per cell ,during which there is a excess ofGCH resources (16k channel).Note : GCH resources cover the established and the reserved GCH.

P472 : CUMULATED_TIME_FREE_EXTRA_BONUS_ABIS_NIBBLES : Cumulative time (in seconds), per BTS ,duringwhich there are free extra and bonus Abis nibbles available.

Free extra and bonus nibbles are extra and bonus nibbles not currently used in a GCHP474 : CUMULATED_TIME_FREE_ATER_NIBBLES : Cumulative time (in seconds), per GPU ,during which there arefree Ater nibbles.

A free Ater nibble is an Ater nibble which is neither reserved for establishment nor currently used by a GCH.P484 : MIN_NB_FREE_EXTRA_BONUS_ABIS_NIBBLE : Minimum number of free extra and bonus Abis nibbles.


10/114


11/114





Other new counters:

Enhanced Cell Reselection for R97 onwards MS:P221 : NB_PCCO_ACK_UL_NC2_CELL_RESEL : Number of Packet Cell Change Order acknowledged by the MS whilein UL transfert.P222 : NB_PCCO_ACK_DL_NC2_CELL_RESEL : Number of Packet Cell Change Order acknowledged by the MS while

in DL transfert..P223 : NB_PCCO_NC2_CELL_RESEL_DL_TBF : Number of Packet Cell Change Order messages sent while in DLtransfer.P224 : NB_FLUSH_NC2_CELL_RESEL_DL_TBF : Number of FLUSH-LL PDU received after a Packet Cell ChangeOrder has been sent to the MS while in DL transfer.P225 : NB_PCCF_NC2_CELL_RESEL_DL_TBF : Number of Packet Cell Change Failure received from the MS after aPacket Cell Change Order has been sent to the MS while in DL transfer.

P226: NB_PCCO_NC2_CELL_RESEL_UL_TBF : Number of Packet Cell Change Order messages sent while in ULtransfer.P227 : NB_FLUSH_NC2_CELL_RESEL_UL_TBF : Number of FLUSH-LL PDU received after a Packet Cell ChangeOrder has been sent to the MS while in UL transfer.P228 : NB_PCCF_NC2_CELL_RESEL_UL_TBF : Number of Packet Cell Change Failure received from the MS after aPacket Cell Change Order has been sent to the MS while in UL transfer.

P38e : CUMULATED_TIME_PDCH_USED_DL_CELL : Cumulated time during which a PDCH is used by at least oneDL TBF (in GPRS or EGPRS mode), cumulated over all the PDCHs of the cell.P38f: CUMULATED_TIME_PDCH_USED_UL_CELL : Cumulated time during which a PDCH is used by at least oneUL TBF (in GPRS or EGPRS mode), cumulated over all the PDCHs of the cell.

Removed counters due to new B9 mechanisms:

P1 : TIME_HIGH_LOAD_GPRS : Time during which the cell is in a high load situation for PS traffic. This situationimpacts the number of slave PDCHs that can be allocated to the MFS.P100b : MAX_NB_BUSY_GCH_GPU : Maximum number of busy GCH (16k channel) in the GPU.P19 : NB_PDCH_DYN_ALLOC_SUCC : Number of PDCH dynamic allocation success.P29a : CUMULATED_OVERALL_UL_CONNECTION_TIME_GPRS_ACK : Cumulated time duration of all UL TBFsestablished in GPRS mode and RLC acknowledged mode.

P29b : CUMULATED_OVERALL_UL_CONNECTION_TIME_GPRS_NACK : Cumulated time duration of all ULTBFs established in GPRS mode and RLC unacknowledged mode.P29c : CUMULATED_OVERALL_UL_CONNECTION_TIME_EGPRS_ACK : Cumulated time duration of all UL TBFsestablished in EGPRS mode and RLC acknowledged mode.P29d : CUMULATED_OVERALL_UL_CONNECTION_TIME_EGPRS_NACK : Cumulated time duration of all ULTBFs established in EGPRS mode and RLC unacknowledged mode.

P38 : TIME_PDCH_ESTABLISHED : Cumulated time during which the master and slave PDCHs are established for thecell.Note: An established PDCH is a PDCH to which one (several) transmission resource(s) is (are) connected.P38d : CUMULATED_TIME_DEGRADED_SPDCH : Cumulative time (in second) during which a slave PDCH isdegraded due to an Ater congestion and carries at least one UL or DL TBF (TBF established in GPRS mode or EGPRSmode). The counter is integrated over all the slave PDCH(s) established in the cell.

P54 : NB_PDCH_DYN_ALLOC_REQ : Number of PDCH dynamic allocation requests.P149g : AV_NB_ESTABLISHED_PDCH_GPU : Average number of established PDCHs (i.e. equipped with a GCH

transmission resource) in the sub-BSS.P150b : MAX_NB_ESTABLISHED_SPDCH_CELL : Maximum number of established slave PDCHs in the cellP150c : MIN_NB_ESTABLISHED_SPDCH_CELL : Minimum number of established slave PDCHs in the cell.P150g : MAX_NB_ESTABLISHED_PDCH_GPU : Maximum number of established PDCHs (i.e. equipped with a GCH

transmission resource in the sub-BSS).P166 : NB_DL_TBF_2_3_PARTIAL_SUCC : Number of downlink TBF establishment requests requesting 2 or 3 slots,

which are only partially satisfied by the initial allocation.P167 : NB_UL_TBF_2_3_PARTIAL_SUCC : Number of uplink TBF establishment requests requesting 2 or 3 slots whichare only partially satisfied by the initial allocation.P168 : NB_DL_TBF_4_5_PARTIAL_SUCC : Number of downlink TBF establishment requests requesting 4 or 5 slots

which are only partially satisfied by the initial allocation.P169 : NB_UL_TBF_4_5_PARTIAL_SUCC : Number of uplink TBF establishment requests requesting 4 or 5 slots which

are only partially satisfied by the initial allocation.


12/114





P414 : CUMULATED_MAX_PDCH_DYN_SECONDS : This counter integrates over time the value of

MAX_SPDCH_DYN during the whole granularity period.P415 : MAX_MAX_PDCH_DYN : This counter gives the maximum value of MAX_SPDCH_DYN during the wholegranularity period.P416 : MIN_OF_MAX_PDCH_DYN : This counter indicates the minimum value of MAX_SPDCH_DYN that has beenobserved over the whole granularity period.

P418 : NB_SOFT_PREEMPTION : Number of times the MFS receives a BSCGP LOAD INDICATION messagerequesting the MFS to de-allocate at least one slave PDCH that is currently allocated to the MFS.


13/114





3 GPRS INDICATORS

3.1 INTRODUCTION

3.1.1 OMC-R COUNTERS RETRIEVAL

3.1.1.1 GPRS Counter types

GPRS indicators are established from performance counters provided by the MFS (GPRS node in the BSS).

Counters are organized into the following types:

- The X721 COUNTER, which is a management abstraction of an underlying counting process (eg number of Resourceallocations). It cumulates telecom events over a given Granularity period (ie the period at the end of which the counter value

has to be collected for analysis), and is reset at the end of that period. It is expressed in integer.

- the X721 GAUGE, which is a management abstraction of a dynamic variable, such as the number of busy GCHs. Itrepresents an instantaneous state of telecom resources, and is not reset at the end of the Granularity period. The gauge is

updated regularly upon internal polling (named GAUGE-POLLING, eg each 30 sec.) of the observed resource. The internalpolling is an inherent mechanism associated with the gauge. It is expressed in integer.

- the X721 TIDE-MARK, which is a mechanism that records the maximum or minimum value reached by a gauge during agranularity period. It is reset at the end of each Granularity period. It is expressed in integer.

- the AVERAGED GAUGE (Alcatel proprietary), that averages over the granularity period all values of a gauge obtained ateach polling, and is reset at the end of the Granularity period. It is expressed in decimal (one significant value after the

coma).

- the TIMER (Alcatel proprietary) which measures the time of a telecom event or procedure. It is expressed in decimal (onesignificant value after the coma)

3.1.1.2 Measurement Activation at OMC-R

GPRS counters are collected on the OMC after each Granularity Period (GP). No jobs are launched as for GSM counterstypes.


14/114





3.1.2 CLASSIFICATION AND NAMING CONVENTIONS

3.1.2.1 Classification

The present chapter defines standard indicators, that can be used to follow behaviour and quality of any kind of GPRSnetworks, equipped with Alcatel BSS in Release B9.

GPRS Indicators can be divided into 3 basic domains:

The Traffic Loaddomain evaluates the GPRS traffic model per interface (radio, BSCGP and Gb interfaces) andper radio channel (AGCH/PAGCH, PCH/PPCH, UL/DL PDTCH, UL/DL PACCH).

The Quality of Service domain evaluates the rate of success or failure per interface (Radio, AterMux, Gb) or

per telecom procedure (TBF UL/DL establishment, UL/DL Data transfer, radio resource allocation or re-allocation).

The Resource Availability and Usage domain evaluates the availability and usage of the resources per interfaceand per GPU. The following resources are identified:

- Abis interface (abis nibbles)- AterMux interface (GCH, LapD)- Gb interface (PVC, Bearer Channel)- GPU object (CPU and DSP usage)


15/114





The following diagram details this classification of GPRS indicators:

GPRS

Indicators

Traffic Load

TBF

Establishment

Data Transfer

Resource

Allocation

Control and Traff ic

Channels

GB Interface

BSCGP Interface

Global QoS

TBF

Establishment

Data Transfer

Resource

Availability

Radio: PDCH

Abis Interface

Ater Interface

Gb Interface

CPU

DSP


16/114





3.1.2.2 Naming conventions

In the following description, the symbol "cell

" means the sum for a subset of cells:

- the cell itself for a cell level indicator- sum of the cells of a BSC for a BSS level indicator

- sum of all cells of network for a network level indicator

3.1.2.3 QOS Description template

GPRS protocol is based on a unilateral connexion between 2 users. Therefore, uplink and downlink transactions must bestudied separately. However, due to the symmetry of both directions indicators within telecom procedures, most oftenGPRS indicators will be described as follows:

INDICATOR Indicators' name

DEFINITION Indicators' definition according to their category

FORMULA DOWNLINK Indicators' computation for downlink procedures

FORMULA UPLINK Indicators' computation for Uplink procedures

THRESHOLD Threshold(s) for acceptable quality (upon this threshold, alert should be triggered)

COMMENT Comments

REF NAME Common reference name for methods,A985-NPA and A956-RNO1

UNIT Number, %, second,Kbit/second


17/114





3.2 TRAFFIC LOAD AND TRAFFIC MODEL INDICATORS

This set of indicators provides users with:

- number of transactions attempts and successes (TBF establishment requests and successes according the radio

access configuration and the MS state)

- traffic computation for a cell (number of established TBF and sessions, transfer direction and throughput)

- load on traffic and signalling channels to evaluate GPRS channels dimensioning

- load and traffic concerning the resource allocation procedure

- traffic on the BSCGP (BSC/MFS), Gb and Abis interfaces.

3.2.1 TBF ESTABLISHMENT TRAFFIC

3.2.1.1 Downlink general presentation

DL Traffic

TBF Establishment

Traffic Model

TBF Request

Global Traffic

DL Success

MS in DRX

no MPDCH

Multislot MS 1

Satisfied

DL Success

MS in DRX

with MPDCH

Multislot MS 2/3

Satisfied

DL Success

MS in non DRX

no MPDCH

Multislot MS 4/5

Satisfied

DL Success

MS in non DRX

with MPDCH

DL Success

T3192 running

DL Success

MS in transfer

DL Request

MS in DRX

no MPDCH

DL Request

MS in DRX

with MPDCH

DL Request

MS in non DRX

no MPDCH

DL Request

MS in non DRX

no MPDCH

DL Request

T3192 running

DL Request

MS in transfer

DL Request

MS EGPRS capable

Paging Traffic

Ratio PS/CS

Paging


18/114





3.2.1.2 Downlink TBF establishment request

INDICATOR GLOBAL DL TBF REQUEST

DEFINITION Total number of DL TBF establishment requestsFORMULA DOWNLINK

CELL(P91a + P91b + P91c + P91d + P91e + P91f)

THRESHOLD

COMMENT

REF NAME TRDTERQN UNIT Number

INDICATOR DL TBF ESTABLISHMENT REQUEST WITH MS IN IDLE DRX MODE AND NOMPDCH

DEFINITION

Total number of DL TBF establishment requests on CCCH when the MS is in packet idle

mode and DRX mode.

FORMULA DOWNLINK CELL

(P91c)

THRESHOLD

COMMENT This counter applies to GPRS and EGPRS MS.

REF NAME TRDTRV1N UNIT Number

INDICATOR DL TBF ESTABLISHMENT REQUEST WITH MS IN NON DRX MODE AND NOMPDCH

DEFINITION

Number of DL TBF establishment requests on CCCH when the MS is in packet idle modeand non-DRX mode.


(P91f)

THRESHOLD



INDICATOR DL TBF ESTABLISHMENT REQUEST WITH MS IN IDLE DRX MODE AND MPDCH

DEFINITION Total number of DL TBF establishment requests on PCCCH when the MS is in packet idle

mode and DRX mode.


(P91a)

THRESHOLD




19/114





INDICATOR DL TBF ESTABLISHMENT REQUEST WITH MS IN NON DRX MODE AND MPDCH

DEFINITIONTotal number of DL TBF establishment requests on PCCCH when the MS is in packet idle

mode and non-DRX mode.


(91d)

THRESHOLD



INDICATOR DL TBF ESTABLISHMENT REQUEST AND T3192 RUNNING

DEFINITIONNumber of DL TBF establishment requests received while the timer T3192 is running at BSS

side.


( 91e)

THRESHOLD



INDICATOR DL TBF ESTABLISHMENT REQUEST WITH MS IN UL TRANSFER MODE

DEFINITIONTotal number of DL TBF establishment requests when MS is in uplink packet transfer mode.


(91b)

THRESHOLD



INDICATOR DL TBF ESTABLISHMENT REQUEST FOR EGPRS CAPABLE MS AND WITH MS IN

IDLE MODE

DEFINITION Number of DL TBF establishment requests when MS is in packet idle mode and is EGPRScapable


(91g)

THRESHOLD

COMMENT This indicator will be incremented also for a non edge cell

REF NAME TRDTREGN UNIT Number


20/114





3.2.1.3 Paging sharing

INDICATOR PS PAGING RATIO

DEFINITION Ratio PS Paging / CS Paging on PCH.


(P53a /(MC8a -P53a-P53c))

THRESHOLD

COMMENT

REF NAME TRPCHO UNIT %

INDICATOR PS PAGING REQUESTS

DEFINITION Number of (BSCGP) PAGING REQUEST for PS paging sent to the MS (through the BSC

which manages the PCH resource).This counter gives an indication of the PCH load used for GPRS.


(P53a)

THRESHOLD

COMMENT

REF NAME TRPCHPAN UNIT Number

INDICATOR CS PAGING REQUESTS

DEFINITION Number of (BSCGP) PAGING REQUEST for CS paging sent to the MS (through the BSC

which manages the PCH resource).This counter gives an indication of the PCH load used for GSM.


(P53b)

THRESHOLD

COMMENT

REF NAME TRPCHCIN UNIT Number

INDICATOR IMMEDIATE ASSIGNMENT PCH

DEFINITION Number of (BSCGP) IMMEDIATE ASSIGNMENT sent to the MS (through the BSC which

manages the PCH resource) for a DL TBF establishment when the MS is in DRX mode.

FORMULA DOWNLINK CELL (P53c)

THRESHOLD

COMMENT

REF NAME TRPCHIAN UNIT Number


21/114





3.2.1.4 Downlink global traffic

INDICATOR GLOBAL DL TBF SUCCESS

DEFINITION Total number of DL TBF establishment successes


(P90a + P90b + P90c + P90d + P90e + P90f)

THRESHOLD

COMMENT

REF NAME TRDTESUN UNIT Number

INDICATOR DL TBF SUCCESS WITH MS IN DRX MODE AND NO MPDCH

DEFINITIONNumber of DL TBF establishment successes per cell (seized by the mobile) when MS is in

idle mode and DRX mode and no master channel is established in the cell.


(90c)

THRESHOLD

COMMENT This indicator applies to GPRS and EGPRS MS.

REF NAME TRDTSV1N UNIT Number

INDICATOR DL TBF SUCCESS WITH MS IN NON DRX MODE AND NO MPDCH

DEFINITIONNumber of DL TBF successfully established on CCCH when the MS is in packet idle modeand non-DRX mode.


(P90f)

THRESHOLD



INDICATOR DL TBF SUCCESS WITH MS IN DRX MODE AND MPDCH

DEFINITION

Number of DL TBF successfully established on PCCCH when the MS is in packet idle modeand DRX mode.


(P90a)

THRESHOLD




22/114





INDICATOR DL TBF SUCCESS WITH MS IN NON DRX MODE AND MPDCH

DEFINITION

Number of DL TBF successfully established on PCCCH when the MS is in packet idle modeand non-DRX mode.


(P90d)

THRESHOLD



INDICATOR DL TBF SUCCESS AND T3192 RUNNING

DEFINITIONNumber of DL TBF successfully established on PACCH while the timer T3192 is running atBSS side.


(P90e)

THRESHOLD



INDICATOR DL TBF SUCCESS WITH MS IN TRANSFER

DEFINITIONNumber of DL TBF successfully established when MS is in uplink packet transfer mode.


(P90b)

THRESHOLD

COMMENT This indicator applies to GPRS and EGPRS MS


INDICATOR DL TBF SUCCESS WITH MS IN IDLE MODE AND IS EGPRS CAPABLE

DEFINITION Number of DL TBF establishment successes when MS is in packet idle mode andsuccessfully served in EGPRS mode.


(P90g)

THRESHOLD

COMMENT

REF NAME TRDTSEGN UNIT Number


23/114





INDICATOR MULTISLOT MS 1 SATISFIED

DEFINITIONNumber of downlink TBF establishment requests requesting 1 slot which are satisfied.


(P160)

THRESHOLD

COMMENT

REF NAME QRDTES1N UNIT Number

INDICATOR MULTISLOT MS 2/3 SATISFIED

DEFINITIONNumber of downlink TBF establishment requests requesting 2 or 3 slots which are totally

satisfied.


(P162)

THRESHOLDCOMMENT



DEFINITION Total number of DL TBF establishment requests requesting 4 or 5 slots which are totallysatisfied.


(P164)

THRESHOLDCOMMENT



24/114





3.2.1.5 Uplink general presentation

UL Traffic

TBF E stablishment

Traffic Model

TBF Request

Global Traffic

UL Success

no MPDCH

Multislot MS 1

Satisfied

UL Success

with MPDC H

Multislot MS 2/3

Satisfied

UL Success

MS in transfe r

Multislot MS 4/5

Satisfied

UL Request

no MPDCH

UL Request

with MPDCH

UL Request

MS in transfer

UL Request

MS EGPRS capable

3.2.1.6 Uplink TBF establishment request

INDICATOR GLOBAL UL TBF REQUEST

DEFINITION Total number of UL TBF establishment requests


(P62a + P62b +P62c - P438c)

THRESHOLD

COMMENT It is excluded the number of UL requests used on PACCH/U to carry NC2 signallingmessages (when no PCCCH is established in the cell).

REF NAME TRUTERQN UNIT Number

INDICATOR UL TBF REQUEST MS IN IDLE AND WITH NO MPDCH

DEFINITION Number of UL access requests on CCCH when the MS is in packet idle mode.


25/114






(P62c)

THRESHOLD

COMMENT Note 1: This indicator applies to GPRS and EGPRS MS.Note 2: This indicator takes into account requests leading to both an uplink TBFestablishment or a single block allocation used to carry a 04.60 PACKET MEASUREMENTREPORT message or a 04.60 PACKET CELL CHANGE FAILURE message (when the NC2feature is activated).

REF NAME TRUTRV1N UNIT Number

INDICATOR UL TBF REQUEST MS IN IDLE AND WITH MPDCH

DEFINITION

Number of UL TBF establishment requests on PCCCH when :- the MS is in packet idle mode- the MS requests an uplink TBF establishment


(P62a)

THRESHOLD

COMMENT Note 1: This indicator applies to GPRS and EGPRS MS.Note 2: The access cause "Single Block without TBF establishment" is not taken into accountin this indicator, as this access cause does not lead to the establishment of an uplink TBF.


INDICATOR UL TBF REQUEST WITH MS IN DL TRANSFER

DEFINITION

Number of UL TBF establishment requests when the MS is in downlink packet transfermode.


(P62b)

THRESHOLD




26/114





INDICATOR UL TBF REQUEST WITH MS IN IDLE MODE AND IS EGPRS CAPABLE

DEFINITION Number of UL TBF establishment requests on (P)CCCH for EGPRS capable MS in packet

idle mode.


(P62d)

THRESHOLD

COMMENT This indicator will be incremented also in a non edge cell


3.2.1.7 Uplink global traffic

INDICATOR GLOBAL UL TBF SUCCESS

DEFINITION Total number of UL TBF establishment successes


(P30a + P30b + P30c)

THRESHOLD

COMMENT

REF NAME TRUTESUN UNIT Number

INDICATOR UL TBF SUCCESS MS IN IDLE WITH NO MPDCH

DEFINITION Number of UL TBFs successfully established on CCCH when:- the MS is in packet idle mode- the MS have requested an uplink TBF establishment


(P30c)

THRESHOLD


REF NAME TRUTSV1N UNIT Number

INDICATOR UL TBF SUCCESS MS IN IDLE WITH MPDCH

DEFINITIONNumber of UL TBFs successfully established on PCCCH when:- the MS is in packet idle mode

- the MS have requested an uplink TBF establishment


(P30a)

THRESHOLD




27/114





INDICATOR UL TBF SUCCESS WITH MS IN DL TRANSFER

DEFINITIONNumber of UL TBF successfully established when the MS is in downlink packet transfer

mode.


(P30b)

THRESHOLD



INDICATOR UL TBF SUCCESS WITH MS IN IDLE MODE AND IS EGPRS CAPABLE

DEFINITION Number of UL TBF establishments on (P)CCCH for EGPRS MS in packet idle modesuccessfully served in EGPRS mode.

FORMULA DOWNLINK CELL (P30d)THRESHOLD

COMMENT


INDICATOR MULTISLOT MS 1 SATISFIED

DEFINITION Total number of UL TBF establishment requests requesting 1 slot which are satisfied at onceby the initial allocation.


(P161)

THRESHOLD

COMMENT

REF NAME QRUTES1N UNIT Number


DEFINITION Total number of UL TBF establishment requests requesting 2 or 3 slots which are satisfied atonce by the initial allocation...


(P163)

THRESHOLD

COMMENT



28/114






DEFINITION Total number of UL TBF establishment requests requesting 4 or 5 slots which are satisfied at

once by the initial allocation..


(P165)

THRESHOLD

COMMENT



29/114





3.2.2 DATA TRANSFER TRAFFIC

3.2.2.1 General presentation

Traffic

Data Transfer

TBF Traffic Model

Average Number

Simultaneous TBF

Max Number

Simulteaneous TBF

GPRS Sessions

Average Number

TBF per session

Downlink TBF Transition

Delayed to Active

Downlink Transfer

Resumption per

DL TBF

High Load Duration Average TBF Pilled

Average PDCH per TBF

DL TBF for Signalling

Cumulative Time

TBF Connections

Cumulative Active Time

Downlink TBF Connections

Cumulative time

MS in

Biaised Transfer

Cumulative Time

MS in Biaised Transfer

and serve by TBF in

Same Direction

Downlink BiaisedTransfer Time Ratio

TBF Ressource

Reallocation Requests

TBF Ressource

Reallocation Successes

Throughput

Average Useful

Throughput

per cell

Average Useful

Throughput

per TBF

Average Useful

Throughput

per PDCH

Average Useful Real

Throughput per PDCH

Coding Scheme Usage

Number of Useful RLC Blocks

Number of Useful Bytes

CS Adaptation


30/114





3.2.2.2 TBF Traffic model

INDICATOR AVERAGE NUMBER OF TBF SIMULTANEOUSLY ESTABLISHED

DEFINITION Average number of DL or UL TBF simultaneously established during the granularity period.

FORMULA DOWNLINK (P36/10)

FORMULA UPLINK (P40/10)

THRESHOLD

COMMENT

REF NAME TRDTBA, TRUTBA UNIT Number

INDICATOR MAXIMUM NUMBER OF TBF SIMULTANEOUSLY ESTABLISHED

DEFINITION Maximum number of DL or UL TBF simultaneously established during the granularityperiod.


(P35)

FORMULA UPLINK CELL

(P39)

THRESHOLD

COMMENT

REF NAME TRDTBM, TRUTBM UNIT Number

INDICATOR GPRS SESSIONS

DEFINITION Total number of GPRS sessions during the granularity period.

FORMULA CELL

(P413)

THRESHOLD

COMMENT A session corresponds to a mobile station and the BSS exchanging packet data usingdownlink TBFs, uplink TBFs or both. There is always at least one TBF active acrossthe whole duration of a session.

REF NAME ARXDTSEN UNIT Number

INDICATOR AVERAGE TBF PER SESSION

DEFINITION Average number of downlink or uplink TBFs per session period.FORMULA DOWNLINK

CELL((P90a + P90b + P90c + P90d + P90e + P90f) / P413)

FORMULA UPLINK CELL

((P30a + P30b + P30c) / P413)

THRESHOLD

COMMENT

REF NAME ARDTBSEA, ARUTBSEA UNIT Number


31/114





INDICATOR DOWNLINK TBF RESUMPTION FROM DELAYED TO ACTIVE

DEFINITION Total Number of DL TBF transfer resumption in delayed release state.

FORMULA CELL

(P422)

THRESHOLD

COMMENT

REF NAME QRDDTDTN UNIT Number

INDICATOR DOWNLINK TRANSFER RESUMPTION PER DL TBF

DEFINITION Rate of DL TBF transfer resumption in delayed release state per TBF.

FORMULA CELL

(P422 / (P90a + P90b + P90c + P90d + P90e + P90f))

THRESHOLD

COMMENT

REF NAME QRDDTTRR UNIT %

INDICATOR TBF PILLED

DEFINITION Average number of DL/UL TBF on PDCHs active with DL/UL transfers (TBF active anddelayed/extended phases are taken into account).


(P451b / P38e)

FORMULA UPLINK CELL

(P451a / P38f)

THRESHOLD New in B9

COMMENT An active PDCH with DL/UL transfer is a PDCH carrying at least one DL/UL TBF.

REF NAME ARPDCTDPIN, ARPDCTUPIN UNIT Number

INDICATOR NUMBER OF PDCH PER TBF

DEFINITION Average number PDCHs (active with DL/UL transfers) per DL/UL TBF (TBF active anddelayed/extnded phases are taken into account).


(P451b / P16)

FORMULA UPLINK CELL

(P451a / P461)

THRESHOLD New in B9

COMMENT An active PDCH with DL/UL transfer is a PDCH carrying at least one DL/UL TBF.

REF NAME ARPDCUDBUA, ARPDCUUBUA UNIT Number

INDICATOR TIME DL TBF FOR GMGM SIGNALLING RATIO

DEFINITION Ratio of time during which a DL TBF established for GMM signalling purposes uses aPDCH, compared with all DL PDCH established, for all PDCHs and for all the TBFs of the

cell.


(P452 / P451b)

THRESHOLD

COMMENT New in B9

REF NAME ARPDCTDSGO UNIT %


32/114





INDICATOR CUMULATIVE TIME TBF CONNECTIONS

DEFINITION Cumulative overall time of DL or UL TBF connections.


(P16 / 10)

FORMULA UPLINK

CELL (P461 / 10)THRESHOLD

COMMENT For B9 P461 replaces (P29a+ P29b+ P29c+ P29d) in UL.

REF NAME QRDDTNRT, QRUDTNRT UNIT Second

INDICATOR CUMULATIVE ACTIVE TIME TBF CONNECTIONS

DEFINITION Cumulative active time of all DL TBF connections in the cell over the Granularity period.


(P52a + P52b + P52c + P52d ) / 10

FORMULA UPLINK CELL

(P129c + P129d + p129a + P129b) / 10

THRESHOLD

COMMENT An active DL TBF connection is a DL TBF not in delayed release state.An active UL TBF connection is a UL TBF not in extended release state.

REF NAME ARDTBACT, ARUTBACT UNIT Second

INDICATOR CUMULATIVE TIME MS IN BIAISED TRANSFER

DEFINITION Cumulative time during which MSs are engaged in downlink or uplink biased transfers.


(P419)/10

FORMULA UPLINK CELL

(P420)/10

THRESHOLD

COMMENT

REF NAME ARXDTDBT, ARXDTUBT UNIT Second

INDICATOR CUMULATIVE TIME MS IN BIAISED TRANSFER AND SERVED IN THE SAME

DIRECTION

DEFINITION Cumulative time during which MSs are engaged in a downlink or uplink biased transfers andare served by TBF in the same direction.


(P411)/10

FORMULA UPLINK CELL

(P412 )/10

THRESHOLD

COMMENT

REF NAME ARDTBDBT,ARUTBUBT UNIT Second


33/114


34/114





3.2.2.3 Throughput

INDICATOR AVERAGE USEFUL THROUGHPUT PER CELL

DEFINITION Average of useful throughput on DL or UL PDTCH at RLC layer


(P55a*160 + P55b*240 + P55c*288 + P55d*400 + P55e*176 + P55f*224 +

P55g*296 + P55h*352 + P55i*448 + P55j*592 + (P55k*896 + P55l*1088 + P55m*1184)/2)/ (PERIOD*1000)

FORMULA UPLINK CELL

(P57a*160 + P57b*240 + P57c*288 + P57d*400 + P57e*176 + P57f*224 +

P57g*296 + P57h*352 + P57i*448 + P57j*592 + (P57k*896 + P57l*1088 + P57m*1184)/2))/ (PERIOD*1000)

THRESHOLD

COMMENT New formulas in B9 to take into account the new coding schemes in UL.

DL: The DL retransmitted blocks and blocks containing LLC dummy UI commands are not

counted.UL: The UL retransmissions are not counted.RLC ack mode only is considered.

REF NAME TRPDDA, TRPDUA UNIT Kbits/second

INDICATOR AVERAGE USEFUL THROUGHPUT PER TBF

DEFINITION Average of useful throughput on DL or UL PDTCH at RLC level per TBF in RLCacknowledged mode


(P55a*160 + P55b*240 + P55c*288 + P55d*400 + P55e*176 + P55f*224 +

P55g*296 + P55h*352 + P55i*448 + P55j*592 + (P55k*896 + P55l*1088 + P55m*1184)/2)/ ((P52a + p52c)*1000)

FORMULA UPLINK CELL

(P57a*160 + P57b*240 + P57c*288 + P57d*400 + P57e*176 + P57f*224 +

P57g*296 + P57h*352 + ( P57i*448 + P57j*592 + (P57k*896 + P57l*1088 +P57m*1184)/2)) / ((P129a + P129c)*1000)

THRESHOLD

COMMENT New formulas in B9 to take into account the new coding schemes in UL.The RLC blocks retransmissions are not counted in both directions.

REF NAME TRPDDTBA, TRPDUTBA UNIT Kbits/second


35/114





INDICATOR AVERAGE USEFUL THROUGHPUT PER PDCH

DEFINITION Average of useful throughput on DL or UL PDTCH at RLC level per PDCH in RLC

acknowledged mode.FORMULA DOWNLINK

CELL(P55a*160 + P55b*240 + P55c*288 + P55d*400 + P55e*176 + P55f*224 + P55g*296

+ P55h*352 + P55i*448 + P55j*592 + (P55k*896 + P55l*1088 + P55m*1184)/2) /(P38e/10*1000)

FORMULA UPLINK CELL

(P57a*160 + P57b*240 + P57c*288 + P57d*400 + P57e*176 + P57f*224 +

P57g*296 + P57h*352 + P57i*448 + P57j*592 + (P57k*896 + P57l*1088 + P57m*1184)/2)

/ (P38f/10*1000)

THRESHOLD

COMMENT New formula in B9 to account for new coding schemes in UL.

The RLC blocks retransmissions are not counted in both directions.Reference Time: Cumulated time during which the PDCHs are established.

REF NAME TRPDDPDA, TRPDUPDA UNIT Kbits/second

INDICATOR AVERAGE REAL USEFUL THROUGHPUT PER PDCH IN CS1-2-3-4

DEFINITION Average DL/UL useful throughput (in Kbits/s) in RLC acknowledged in CS1-2-3-4.


(P55a*160 + P55b*240 + P55c*288 + P55d*400) / ((P38b-P38c)/10*1000)

FORMULA UPLINK CELL

(P57a*160 + P57b*240 + P57c*288 + P57d*400) / ((P38b-P38c)/10*1000)

THRESHOLD

COMMENT The DL/UL retransmissions are not counted.Reference Time: Cumulated time during which the slave PDCHs carry at least one UL or DL

TBF established in GPRS mode.REF NAME TRPDDTHGPA, TRPDUTHGPA UNIT Kbits/second

INDICATOR AVERAGE REAL USEFUL THROUGHPUT PER PDCH IN MCSx

DEFINITION Average DL/UL useful throughput (in Kbits/s) in RLC acknowledged mode.


(P55e*176 + P55f*224 + P55g*296 + P55h*352 + P55i*448 + P55j*592 + (P55k*896

+ P55l*1088 + P55m*1184)/2) / (P38c/10*1000)

FORMULA UPLINK CELL

(P57e*176 + P57f*224 + P57g*296 + P57h*352 + P57i*448 + P57j*592 +

(P57k*896 + P57l*1088+P57m*1184)/2) / (P38c/10*1000)

THRESHOLD

COMMENT New formula in B9 to take into accounts the new coding schemes in UL.The DL/UL retransmissions are not counted.Reference time for both directions: Cumulated time during which the slave PDCHs carry atleast one UL or DL TBF established in EGPRS mode.

REF NAME TRPDDTHEGA, TRPDUTHEGA UNIT Kbits/second


36/114





INDICATOR AVERAGE REAL USEFUL THROUGHPUT PER PDCH

DEFINITION Average DL/UL useful throughput (in Kbits/s) in RLC acknowledged mode.


(P55a*160 + P55b*240 + P55c*288 + P55d*400 + P55e*176 + P55f*224 + P55g*296

+ P55h*352 + P55i*448 + P55j*592 + (P55k*896 + P55l*1088 + P55m*1184)/2) /

(P38b/10*1000)

FORMULA UPLINK CELL

(P57a*160 + P57b*240 + P57c*288 + P57d*400 + P57e*176 + P57f*224 +

P57g*296 + P57h*352 + P57i*448 + P57j*592 + (P57k*896 + P57l*1088 + P57m*1184)/2)

/ (P38b/10*1000)

THRESHOLD

COMMENT New formula in B9 to take into accounts the new coding schemes in UL.The DL/UL retransmissions are not counted.Reference time for both directions: Cumulated time during which the slave PDCHs carry at

least one UL or DL TBF (established in GPRS mode or EGPRS mode).REF NAME TRPDDTHA, TRPDUTHA UNIT Kbits/second


37/114





3.2.2.4 Coding Scheme Usage

INDICATOR NUMBER OF USEFUL RLC BLOCKS

DEFINITION In RLC acknowledged mode, number of useful DL RLC blocks sent on PDTCH encoded .FORMULA DOWNLINK

CELL(P55a+P55b+P55c+P55d+P55e+P55f+P55g+P55h+P55i+P55j+P55k+P55l+P55m)

FORMULA UPLINK CELL

(P57a+P57b+P57c+P57d+P57e+P57f+P57g+P57h+P57i+P57j+P57k+P57l+P57m)

THRESHOLD

COMMENT In DL, the retransmitted blocks and blocks containing LLC dummy UI commands are not

counted.

REF NAME TRPDDUSN, TRPDUUSN UNIT Number

INDICATOR NUMBER OF BYTES SENT IN RLC ACK MODE

DEFINITION Number of DL useful RLC data bytes sent on PDTCH in GPRS/EGPE and RLC ack modes.


((( P55a*160 + P55b*240+ P55c*288 + P55d*400) / 8) + (P55e*176 + P55f*224 +

P55g*296 + P55h*352 + P55i*448+P55j*592+P55k*448+P55l*544+P55m*592) / 8)

FORMULA UPLINK CELL

((P57a*160 + P57b*240 + P57c*288 + P57d*400) / 8) + ( ( P57e*176 + P57f*224 +

P57g*296 + P57h*352 + P57i*448 + P57j*592 + P57k*448 + P57l*544 + P57m*592) / 8)

THRESHOLD

COMMENT

REF NAME TRPDDBYN, TRPDUBYN UNIT Number

INDICATOR NUMBER OF CS ADAPTATIONS-DECREASE PER TBF

DEFINITION Average number of CS adaptions per TBF, from a given coding scheme to a more robust

coding scheme in the downlink direction.FORMULA DOWNLINK

CELL(P351b / (P90a + P90b + P90c + P90d + P90e + P90f))

FORMULA UPLINK CELL

(P352b / (P30a + P30b + P30c))

THRESHOLD

COMMENT This formula does not apply to EGPRS TBFs

REF NAME QRDDTADA, QRUDTADA UNIT Number

INDICATOR NUMBER OF CS ADAPTATIONS-INCREASE PER TBF

DEFINITION Average number of CS adaptions per TBF, from a given coding scheme to a less robust

coding scheme in the downlink direction.

FORMULA DOWNLINK CELL (P351a / (P90a + P90b + P90c + P90d + P90e + P90f))

FORMULA UPLINK CELL

(P352a / (P30a + P30b + P30c))

THRESHOLD

COMMENT This formula does not apply to EGPRS TBFs

REF NAME QRDDTAIA, QRUDTAIA UNIT Number


38/114


39/114





INDICATOR MAXIMUM NUMBER OF PDCH USED IN THE CELL

DEFINITION Maximum number of PDCHs used in the cellIt count the used (active) PDCH.

FORMULA P495

THRESHOLD

COMMENT Note: An used PDCH is a PDCH that carries at least one UL or DL TBF

REF NAME TRPALSRM UNIT Number

INDICATOR MINIMUM NUMBER OF PDCH USED IN THE CELL

DEFINITION Minimum number of PDCHs used in the cell. It count the used (active) PDCH. An usedPDCH is a PDCH that carries at least one UL or DL TBF.

FORMULA P496THRESHOLD

COMMENT Note: An used PDCH is a PDCH that carries at least one UL or DL TBF

REF NAME TRPALSRI UNIT Number


40/114


41/114





3.2.4 CONTROL AND TRAFFIC CHANNELS


AGCH Load PAGCH S ignalling

Traffic

Traffic

AGCH / PAGCH

CCCH LOAD

Traffic

CCCH

PCH Load

Downlink Assigment

on PPCH

PS Paging

on PPCH

CS Paging

on PPCH

PPCH Signalling

Traffic

Traffic

PCH / PPCH

RACH Load PRACH Signalling

Traffic

Traffic

RACH / PRACH

PDTCH Load PACCH Load

Traffic

PDTCH / PACCH

Traffic

Control and TrafficChannels


42/114





3.2.4.2 Indicators

INDICATOR PCH LOAD FOR PS TRAFFIC

DEFINITION Load Rate per cell on PCH logical channel due to PS paging request and ImmediateAssigment messages sent to MS for DL TBF establishments when MS are in DRX mode.

FORMULA CELL

((P53a / N1) + P53c) / (N2 * GP / 0.240)

THRESHOLD

COMMENT The QoS alarm is generated by the indicator of PCH load at BSC side, where the loadinduced by the GSM and by the GPRS are merged. This MFS indicator shows the part of

GPRS in the PCH load due to PS Paging request.See note at end of this section.

REF NAME TRPCHE UNIT %

INDICATOR PPCH SIGNALLING TRAFFIC

DEFINITION PPCH signalling load on all the existing MPDCHs. The dedicated PPCH signalling loadrepresents the number of PPCH blocks dedicated to CS/PS Paging requests and Packet

Downlink Assignment messages over the granularity period

FORMULA CELL

( P61 )

THRESHOLD

COMMENT

REF NAME TRPPCN UNIT Number

INDICATOR CS PAGING ON PPCH

DEFINITION Number of 04.06 PACKET PAGING REQUEST for CS paging sent to the MS on PPCH.

FORMULA CELL

( P61b )

THRESHOLD

COMMENT

REF NAME TRPPCCIN UNIT Number

INDICATOR PS PAGING ON PPCH

DEFINITION Number of 04.06 PACKET PAGING REQUEST for PS paging sent to the MS on PPCH.

FORMULA CELL

( P61a )

THRESHOLD

COMMENT

REF NAME TRPPCPAN UNIT Number


43/114





INDICATOR PACKET DOWNLINK ASSIGMENT ON PPCH

DEFINITION Number of packet downlink assignment messages on PPCH.

FORMULA CELL

(P61 05*P61a 0.5*P61b)

THRESHOLDCOMMENT A weight of 0.5 (assuming that 2 paging requests are gathered in one single block) is given toa CS and PS paging sent on PPCH.A weight of 1 is given to the Packet DL Assignment messages sent on PPCH (in DRX andnon DRX mode)

REF NAME TRPPCPGN UNIT Number

INDICATOR CCCH LOAD

DEFINITION Load Rate per cell on PCH+ AGCH logical channel due to GPRS only.

FORMULA CELL

((P53a / N1) + P49 + P53c ) / (N2 * PERIOD / 0.240)),

THRESHOLDCOMMENT The QoS alarm is generated by the indicator of PCH+AGCH load at BSC side. For the BSC

indicator, the load induced by the GSM and by the GPRS are merged. This MFS indicatorshows the part of GPRS in the PCH+AGCH load.See note at end of this section.

REF NAME TRCCHE UNIT %

INDICATOR FIXED AGCH LOAD

DEFINITION Load Rate per cell on AGCH logical channel due to GPRS only in case of fixed AGCHconfiguration (BS_AGBLK_RES not null)

FORMULA CELL

(P49 +P27) / (N4 * GP / 0.240)

THRESHOLD

COMMENT The QoS alarm is generated by the indicator of AGCH load at BSC side. For this BSC

indicator, the load induced by the GSM and by the GPRS are merged. The MFS indicatorshows the part of GPRS in the AGCH load. In the part, are counted the IMMEDIATEASSIGNMENT COMMAND (P49) and IMMEDIAT ASSIGNMENT EJECT (linked to ULTBF establishment failure due to congestion, P27) for GPRS.

REF NAME TRAGCE UNIT %

INDICATOR PAGCH SIGNALLING TRAFFIC

DEFINITION Dedicated PAGCH signalling load on all the existing MPDCHs.The dedicated PAGCH signalling load represents the number of blocks dedicated to Packet

Uplink Assignment and Packet Access Reject messages over the granularity period.

FORMULA CELL

( P400 )

THRESHOLD

COMMENT

REF NAME TRPAGN UNIT Number


44/114





INDICATOR PACCH LOAD

DEFINITION Load rate per cell on the PACCH signalling channels.


(P59) / (12*(P38e/10) * 1 / 0.240)

FORMULA UPLINK

CELL (P60) / (12*(P38f/10) * 1 / 0.240)THRESHOLD

COMMENT Reference: maximum number of PAGCH/PDTCH/PACCH blocks that can be sent on theaverage number of PDCH(s) (slave and master) active in the cell during the granularity

period (e.g. 30 mn) according to the channel configuration.

REF NAME TRPADE, TRPAUE UNIT %

INDICATOR RACH LOAD

DEFINITION Load rate per cell on RACH logical channel(s) due to GPRS.

FORMULA CELL

(P62c P438c / (N5 * PERIOD / 0.240))

THRESHOLD

COMMENT Reference: maximum number of RACH bursts that can be sent on CCCH during the

display/consolidation period (e.g. 1 hour) according to the channel configuration.See note at end of this section.

REF NAME TRRACE UNIT %

INDICATOR PRACH SIGNALLING TRAFFIC

DEFINITION Signalling load on PRACH.

FORMULA CELL

( P399 )

THRESHOLDCOMMENT

REF NAME TRPRAN UNIT Number


45/114





Notes about control channel load computation:

N1 = average number of mobile identity sent within one PAGING REQUEST message. Its value depends on mobileidentification mode in paging used over the network : by IMSI or TMSI.Typical values are: N1= 3 (IMSI), N1= 1.5 (TMSI).

N2 = maximum number of PCH bursts in one CCCH multiframe: (3 - BS_AGBLK_RES) in combined BCCH mode, (9 -BS_AGBLK_RES) in not combined BCCH mode.

N3 = 3 CCCH blocks in combined BCCH mode, 9 in uncombined BCCH mode

N4 = BS_AGBLK_RES (logical parameter); N is the maximum number of AGCH bursts in one CCCH multiframe: 1 in

combined BCCH mode, 4 in not combined BCCH mode

N5 = maximum number of RACH bursts in one CCCH multiframe: 27 in combined BCCH mode, 51 in not combinedBCCH mode

GP is the number of seconds of the Granularity period (1800 sec for 30 mn)

1 / 0.240 is the number of multiframes in 1 sec


46/114





3.2.5 GB INTERFACE TRAFFIC


LLC BytesDiscarded

Suspension

Donwlink LLC BytesDiscarded

Congestion

Donwlink LLC BytesNot Rerouted

Donwlink LLC BytesWell Rerouted

Cell ReselectionSuccess

DL GPRS UnAck mode

DL GPRS Ack mode

DL EGPRS UnAck mode

DL EGPRS Ack mode

UL GPRS UnAck mode

UL GPRS Ack mode

UL EGPRS UnAck mode

UL EGPRS Ack mode

LLC TrafficTransmitted and Acknowledged

LLC Traffic

Traffic

Gb Interface

3.2.5.2 Indicators

INDICATOR DL LLC BYTES DICARDED DUE TO CONGESTION

DEFINITION Number of DL LLC bytes discarded due to congestion.


(P10)

THRESHOLD

COMMENT This counter is in restriction

REF NAME QRDDTCGN UNIT Number

INDICATOR DL LLC BYTES DICARDED DUE TO SUSPENSION

DEFINITION Number of DL LLC bytes discarded due to the suspend procedure.FORMULA DOWNLINK

CELL(P99)

THRESHOLD

COMMENT

REF NAME QRDDTLSN UNIT Number


47/114





INDICATOR DL LLC BYTES WELL REROUTED

DEFINITION Number of DL LLC bytes successfully rerouted from this cell to another one.


(P95)

THRESHOLDCOMMENT

REF NAME QRDDTLRON UNIT Number

INDICATOR DL LLC BYTES WELL RECEIVED

DEFINITION Number of DL LLC bytes successfully rerouted (i.e. Received) from another cell


(P97)

THRESHOLD

COMMENT

REF NAME QRDDTLRIN UNIT Number

INDICATOR DL LLC BYTES NOT REROUTED

DEFINITION Number of DL LLC bytes discarded because the re-rerouting was not requested by the

SGSN.


(P96)

THRESHOLD

COMMENT

REF NAME QRDDTLNN UNIT Number

INDICATOR CELL RESELECTION SUCCESS

DEFINITION Number of successful cell reselections (in NCO mode or NC2 mode), MS in GMM readystate (either packet transfer mode or packet idle mode).


(P397)

THRESHOLD

COMMENT

REF NAME QRCRXSUN UNIT Number

INDICATOR LLC TRAFFIC IN EGPRS MODE IN RLC ACK MODE

DEFINITION Number of DL and UL LLC bytes transmitted and acknowledge on established TBF inEGPRS mode and RLC acknowledged mode


(P43c)

FORMULA UPLINK CELL

(P44c)

THRESHOLD

COMMENT

REF NAME TGBVCDLEAN, TGBVCULEAN UNIT Number


48/114


49/114





3.3 GLOBAL QUALITY OF SERVICE INDICATORS

3.3.1 TBF ESTABLISHMENT

This set of indicators provides users with indicators corresponding to events concerning the TBF establishment phase:

- definition of TBF establishment success rate and TBF establishment failure rate, ...

- definition of the split of failures rate (BSS System, radio and GB interfaces)

- definition of the split of failures due to congestion (radio and Ater interfaces, GPU entity)


TBF Establishment

QoS

TBF Establishment

Efficiency

TBF Establishment

Success Rate

TBF Establishment

Failure BSS

TBF EstablishmentFailure Gb

TBF Establishment

Failure Radio

Congestion

Radio Congestion

Ater

Bss Qos e Gprs b9 Ed1

Documents

Transcript of Bss Qos e Gprs b9 Ed1